Fairly notorious for the dimmer switch to go out. My Dad had a '67 Belvedere II s/w he bought new that had the dimmer go out one night when car was about 5 yrs. old. Dad didn't cuss a lot but he had me blushing at 17 that night.

they are cheap as barry says, but the quality is cheap as well. as most of us don't use our toys as daily drivers, they might last. but while you are buying one, you might as well get two. the last ones i bought at the swap meet was $3.50 for three of 'em, new in the box. i'm not expecting much, but one of those are in use on my cousin's 28 "f-f-f", [i CAN'T say the word !] roadster pickup and works well.